Cooling device



Feb. 23, 1932.

C S. BAKER COOLING DEVICE Filed May 24, 1929 INVENTOR. whims J Ba /E21 y BY M H15 ATTORNEY? 15 the compressor. I Other-objects will be inpart obvious X g tics Patented Febi'1932 antennas s. man, or commie, nnw ronx, L I 1 em, or JERSEY our, NEW mnsnr,

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nnvrcn v I 1 Application filed m -a 1929. serial No. 865,853.

This invention relates to portable-'compressors, but more particularly to a cooling device for cooling the pressure flu-id during its passage from the receiver tank to the 5 race anism it is adapted to actuate. a

One object of -the invention is to maintain the pressure fluid at a sufficiently low temperatureso that it will have no injurious efiect on.the hose through which mechanism intended to be actuated. A

Other objects are to simplify the construc-: tion and reduce the cost of devices" otthis.) character and to obtain these advantages without adding materially to-the in part pointed out hereinafter.

1n the drawings illustrating the invent on and one form whichit may assume in ipracigure 1 is a side elevation of a' portion of .a portable compressor equippedwith a cooling device constructed in accordance with the practice of the invention, and Figure 2 is a transverse view'taken throu h Figure '1 on the line 22 looking in the i-' rection indicated by the arrows. I

Referring to the-drawings, designates a compressor mounted on a vehicle B andhav- 3o ing a discharge pipe 0 through Which the compressed fluid-flows into a; receiver *tank D mounted on the-vehicleB: "The prime mover-for actuating the compressor A may consist of an internal combustion engine (not shown) but which may 'be mounted in driving relationship with the compressor A on Y the vehicle B in the usual manner. The compressor is accordingly provided with a fuel tank E- disposed in this instance abovethe receiver tank whereby it issupported." i .i Interposedbetween thetanks D and E are *bracketsF comprisinganupper section G and alower section H, The sections G and H are provided with. surfaces ,1 and K curved and D respectively. The sections G f an ,d H I are further provided. with lateral flangesL and 0 respectively for the reception of means to clamp, the sectlonstogetheru In the preshavin tank threaded at their ends toreceive n uts S whereby the sections L and O are drawn together held in properiposition \by rods T threaded weightof portable compressors; however,in which resence of suitable cooling means this heat is .terial upon which heat has to conform to theYcurvature ofthe tanks E ent instance this is -acc bmplished by rods P curved portions Q which overlie the and straight portions Rextending through the flanges L and O The rods are and the tank E is secured fixedly to the sec- "tion G. it flows to -the "The tank E and the sections Gland H are at their ends. The uppe rmost ends U ofthe rods T extend through the flanges L and O and are provided with nuts V which seat. on

the flanges L. The jopposite'ends ofthe rods T extend through flanges W of a main frame andare provided with nuts Y to draw t e bracketsF firmly on the tank D and thus also secure the said tank firmly in position-on -the main frame'X; i

.A s may be observed, the receiver tank D is of relatively small prdportions, in (order to maintain the weight o the apparatus to .a minimum. In this respect portable com- 1 pressors differ 'from stationary compressors.

In thelatter type the limitation of weight is seldom a-desideratum. The receiver tanks may be of large proportions and consequentl a large area of surface will be exposed to the atmosphere. This enables the heat of compression ft'o be readily dissipated. In

ceiver tanks ofsmall size are used practical- 1y". all of the heat created by com ression is retained by,the pressure fluid. n the .ab-

carried to the hose line leading'to the machine inte d'ed to be" actuated, and; since the hose linesa sually'consist of rubber or other maan adverse afiect, the life of the hose is of short duration.

The present invention aims to reduce the temperature of the pressure fluid flowing "from; the receiver tank to the hose.' To this end the receiver tank D is provided with an after-cooler Z in the form of a coiled pipe, one'end of which is connected to the receiver tank D as at b and carries at its other end a manifold c to which a hose line or lines'd ma beconnected Preferabl the after-cooler consists of a'plurality o pipe sections e ar- W ranged in' parallelism and connected at their ends by suitable couplings f,

The after-cooler Zis preferably dis osed between the bracket sections G and H.- en so arranged the bracket sections G andH may be provided with grooves 51' and h respectively in the opposed surfaces of the sections and spaced relatively to each other to conform the pipe sections e instead of permitting the adjacent surfaces of the bracket sections to .contact. In this way the after-cooler will "be rigidly secured in the assembled position unaffected by thc ibration. 7

- In the operatiein of the device the air compressed -by the compressor A will flow through the discharge pipe G into the receiver tank 1)., From thence the compressed air will flow through the pipe sections e to the manifold c and, since lpracticallythe entireexterior surfaces of t e pipe sections e are exposed to the atmosphere, the heat of compression carried by the pressure fluid will be dissipated to such an extent that v when the pressure fluid reaches the hose line ml it will-be reduced to a temperature at which it maybe safely conveyed through the hose line without danger of causing 1njuII'y. thereto. Y

n practice the device has been found to function in an. entirely satisfactory manner. vIt may-be readily applied to existing compressors without necessitating expensive alterations to the compressor and also without adding materially to the weight of the apparatus.

I claim:

1. In a cooling device for portable compressors, the combination of a compressor and a receiver tank, a fuel tank supported by the receiver tank, a coiled pipe between the tanks and connected to the receiver tank, said coiled ipe being exposed to the atmos here to coo the pressure fluid flowing t erethrough,and a bracket on the receiver tank to support the fuel tank and the coiled pipe, said bracket comprising a air of sections adapted to clamp the pipe t erebetween.

2. In a cooling device for portable compressors, the combination of a compressor and a receiver tank, a fuel tank, a coiled pipe connected to the receiver tank and exposed to the atmosphere to cool the ressure fluid flowing from the receiver tan a plurality of brackets, each comprising a pair of sections interposed between the tanks to support the fuel tank and having grooves to rece1ve the coils of the pipe, and means forclam in the sections together and to clamp t e colled pipe between the sections.

3.- In a cooling device for portable compressors, the combination of a compressor and a-receiver tank, afuel tank, a pipe connected to the receiver tank and coiled between the tanks and exposed to the atmosphere tocool the pressure fluid flowing from the receiver tank, a plurality of brackets each comprising a pair of sections disposed between the tanks to support the fuel tank, grooves in the opposed surfaces of the sections adapted to receive the coils of the pipe, and means for clamping the sections together and to clamp the pipe between the sections.

4. In a cooling device for portable compressors, the combination of a compressor and a supporting frame therefor, a receiver tank for the compressor, a coiled pipe connected tothe receiver tank and exposed to the atmosphere for cooling of fluid compressed by the compressor, and means for rigidly securing the pipe to the frame whereby said pipe 1s supported, said means engaging each coil of the pipe to prevent relative movement of said coils.

5. In a cooling device for portable com pressors, the combination of a compressor and a supporting frame therefor, a receiver tank for the compressor mounted on the frame, a coiled pipe connected to the receiver tank and exposed to the atmosphere for cooling of fluid compressed by the compressor, a bracket mounted on the receiver tank and forming a support for said pipe, and bolts for connecting the bracket to the frame, said bolts being disposed on opposite sides of the receiver tank to clamp the receiver tank to the frame.

6. In a cooling device for portable compressors, the combination of a compressor and a supporting frame therefor,'a receiver tank for the compressor, a coiled pipe connected to the receiver tank for cooling of fluid compressed by the compressor, a bracket comprising a pair of sections adapted to receive the pipe there'between, means for drawing the sections together to thereby secure the pipe in the bracket, and means for securing said bracket to the frame.

7. In a cooling device for portable compressors, the combination of a compressor and asupporting frame therefor, a receiver tank for the compressor, a pipe connected to the receiver tank and forming a portion of a a conduit for conveying pressure fluid from the receiver to a machine intended to be actuated, said pipe comprising a plurality of parallelly arranged straight sections and elbow sections connecting the ends of adjacent sections to form a continuous path for the pressure fluid through said pipe, and a bracket engaging the sections of the pipe and being rigidly connected to the frame for supporting the pipe.

8. In a cooling device for portable comthe frame, and additional pressors, the combination of a compressor and a supporting frame therefor, a receiver tank for the compressor, a pipe connected to the receiver. tank and exposed to the atmosphere for cooling the pressure fluid flowing therethrough, said pipe comprising a, plurality of parallelly arranged straight sections and elbow sections connecting the ends of adjacent straight sections to form a continuous path for the pressure fluid through said pipe, a bracket comprising a pair of mem bers disposed on opposite sides of the sections, means fordrawing the members together to clamp the sections between the members, means for securing the bracket to means on the memhers to prevent relative movement of the sections.

In testimonv whereof I have signed this specification.

CHARLES S" BAKER. 

